gpu: drm: xlnx: zynqmp_dp: Use dev_err_probe()

Replace the open-code with dev_err_probe() to simplify the code.

Signed-off-by: Zhang Enpei <[e-mail]>
Signed-off-by: Shao Mingyin <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Tomi Valkeinen <[e-mail]>

drivers/gpu/drm/xlnx/zynqmp_dp.c

···
 
 	dp->reset = devm_reset_control_get(dp->dev, NULL);
 	if (IS_ERR(dp->reset)) {
-		if (PTR_ERR(dp->reset) != -EPROBE_DEFER)
-			dev_err(dp->dev, "failed to get reset: %ld\n",
-				PTR_ERR(dp->reset));
-		ret = PTR_ERR(dp->reset);
+		ret = dev_err_probe(dp->dev, PTR_ERR(dp->reset),
+				    "failed to get reset\n");
 		goto err_free;
 	}